Koji
Borrowed from Japanese こうじ (Kōji).
Every Koji since 1922 — 645 of them. Popularity, births, and rankings for each year, from official Social Security records.
The story of Koji
Koji is rare for boys in the United States, ranked #3,412 in 2025 with 34 babies given the name. It is currently rising compared with a decade ago.
Since 1922, 645 American babies have been named Koji. Its peak came in 2025, when 34 newborns received the name — the signature sound of the 2020s.
The chart above shows the full history: the popularity view (births per 1,000 babies) is the honest comparison across generations, since total US births have changed enormously since 1880. Switch to the rank view to see where Koji stood among all boys' names in any year, or use the compare tool to plot it against other names.
Koji year by year
Every year since 2001, and five-year steps back to 1880. Rank is within each sex.
| Year | Boys | Boys rank |
|---|---|---|
| 2025 | 34 | #3,412 |
| 2024 | 25 | #4,274 |
| 2023 | 33 | #3,516 |
| 2022 | 26 | #4,147 |
| 2021 | 19 | #5,034 |
| 2020 | 12 | #6,850 |
| 2019 | 15 | #5,980 |
| 2018 | 14 | #6,190 |
| 2017 | 13 | #6,519 |
| 2016 | 28 | #3,844 |
| 2015 | 17 | #5,416 |
| 2014 | 15 | #5,884 |
| 2013 | 18 | #5,085 |
| 2012 | 14 | #6,183 |
| 2011 | 14 | #6,119 |
| 2010 | 21 | #4,614 |
| 2009 | 15 | #5,969 |
| 2008 | 21 | #4,639 |
| 2007 | 17 | #5,333 |
| 2006 | 11 | #7,218 |
| 2005 | 18 | #4,745 |
| 2004 | 13 | #6,000 |
| 2003 | 14 | #5,426 |
| 2002 | 13 | #5,584 |
| 2001 | 10 | #6,736 |
| 2000 | 14 | #5,200 |
| 1995 | 13 | #4,673 |
| 1990 | 10 | #5,211 |
| 1985 | 6 | #6,194 |
| 1980 | 5 | #6,800 |
| 1975 | 6 | #5,149 |
| 1970 | — | — |
| 1965 | — | — |
| 1960 | — | — |
| 1955 | — | — |
| 1950 | — | — |
| 1945 | — | — |
| 1940 | — | — |
| 1935 | — | — |
| 1930 | — | — |
| 1925 | 5 | #4,593 |
| 1920 | — | — |
| 1915 | — | — |
| 1910 | — | — |
| 1905 | — | — |
| 1900 | — | — |
| 1895 | — | — |
| 1890 | — | — |
| 1885 | — | — |
| 1880 | — | — |
Famous people named Koji
- Koji Miyata Soccer player · b. 1923
- Koji Funamoto Soccer player · b. 1942
- Koji Sasaki Soccer player · b. 1936
- Koji Suzuki Writer · b. 1957
- Koji Kondo Composer · b. 1961
Ranked by global fame across Wikipedia editions (Pantheon project, MIT).
Frequently asked questions
What does the name Koji mean?
Borrowed from Japanese こうじ (Kōji).
How popular is the name Koji in 2025?
Koji ranked #3,412 among boys' names in the United States in 2025, with 34 babies given the name, according to Social Security Administration data.
How many people are named Koji?
645 babies have been named Koji in the United States since 1922, based on Social Security card applications.
When was the name Koji most popular?
Koji peaked in 2025, when 34 newborns received the name.
Is Koji a boy or girl name?
Koji is overwhelmingly a boy's name — 100% of babies with the name.
Is the name Koji rising or falling?
Koji is on the rise — noticeably more popular now than a decade ago.
Who are famous people named Koji?
Well-known people named Koji include Koji Miyata (soccer player), Koji Funamoto (soccer player), Koji Sasaki (soccer player).